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Linux/AM5728: IPC MessageQ question

Part Number: AM5728

Tool/software: Linux

I am trying to initiate the sending of messages from DSP to ARM (host app) using IPC MessageQ example 2.

The examples I've seen so far has the ARM sending messages, and the DSP getting message and put response to destination Queue as set by the ARM host_app in the reply Queue.

I tried to have the DSP wait for a message queue id from the ARM, then after DSP get at least one message from ARM and replying back, I use the same Queue id to send a message.

but when I send a message from DSP use the same reply Queue id for ARM, I am not able to receive that message on the ARM host_app.

How can I initiate Send messages from DSP to ARM and what do I need to do in order for ARM host_app to receive a DSP message?

I am using latest PSDK 3.2